A passively Q-switched ytterbium doped fiber laser has been demonstrated with a aluminum garnet saturable absorber and distributed stimulated Brillouin scattering. A linearly polarized output with peak power and a pulse duration as short as 490 ps have been obtained. A theoretical model is developed to simulate passive Q switching with the stimulated Brillouin scattering, which shows good agreement with the experiment.
© 2010 Optical Society of America
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